Opens the 'jbak' (GDBM) file produced by the Dreamwidth backup tool, and converts each entry into a markdown file suitable for Zola or Hugo

dreamwidth-to-markdown.py

from dbm import gnu
from collections import namedtuple
from markdownify import markdownify as md
from slugify import slugify

EVENT = b"event:event:"
elfs = gnu.open("./elfs.jbak", "r")


def key_extraction(key):
    found = key.split(b":")
    return ":".join([i.decode("utf-8") for i in found[0:2]])


def event_number(event):
    found = event.split(b":")
    return int(found[2].decode("utf-8"))


event_numbers = [
    event_number(event)
    for event in elfs.keys()
    if event[0 : len(EVENT)] == EVENT
]

events = sorted(event_numbers)

# event:prop:2784:current_music

roots = [
    b"event:allowmask",
    b"event:anum",
    b"event:event",
    b"event:eventtime",
    b"event:ids",
    b"event:lastgrab",
    b"event:lastsync",
    b"event:prop",
    b"event:proplist",
    b"event:realtime",
    b"event:security",
    b"event:subject",
]

Post = namedtuple("Post", "subject body date music tags")


def extract_post(key):
    bkey = bytes(str(key), "utf-8")
    body = str(elfs[b"event:event:" + bkey], "utf-8")
    date = str(elfs[b"event:eventtime:" + bkey], "utf-8")
    subject = ""
    try:
        subject = str(elfs[b"event:subject:" + bkey], "utf-8")
    except:
        None
    music = ""
    tags = ""
    try:
        music = str(elfs[b"event:prop:" + bkey + b":current_music"], "utf-8")
    except:
        None
    try:
        tags = str(elfs[b"event:prop:" + bkey + b":taglist"], "utf-8")
    except:
        None
    return Post(subject, body, date, music, tags)


for event in events:
    post = extract_post(event)
    day = post.date.split(" ")[0]
    filename = "{}.md".format(day)
    if post.subject:
        filename = "{}-{}.md".format(day, slugify(post.subject))
    subject = "(no title)"
    if post.subject:
        subject = post.subject
    with open(filename, "w") as out:
        out.write("+++\n")
        out.write('title = "{}"\n'.format(subject))
        out.write("date = {}Z\n".format(post.date.replace(" ", "T")))
        if post.tags:
            tags = [t.strip() for t in post.tags.split(",")]
            out.write(
                "tags = [{}]\n".format(
                    ", ".join(['"{}"'.format(t) for t in tags])
                )
            )
        if post.music:
            out.write("[extra]\n")
            out.write('current_music = "{}"\n'.format(post.music))
        out.write("+++\n")
        out.write(md(post.body))